Supersprint are often called upon to provide closed-door dyno testing for the worlds top Private & Factory teams and you can't get a better endorsement of a product than on the track
The E46 M3 Supersprint lightweight racing back box is made from 100% thin wall Stainless Steel with quad 80mm pipes and is super light saving valuable Kgs. It is more free-flowing reducing back pressure and increasing BHP and Torque..
Available for the M3 Coupe, Cabriolet and CSL
